Assessment of the perforation limit of a composite RC barrier with a rear steel liner to impact of a non-deforming projectile

Hard projectile perforation on the monolithic and segmented RC panels with a rear steel liner

“…It can be obviously seen that the predicted ballistic limit and the residual velocities by "NDRC þ BRL" and "NDRC þ Rosenburg" models agree better with the test data, which is consistent with the conclusions drawn by Grisaro and Dancygier [24] in the predictions of Tsubota [33] test (Fig. 7 in Ref.…”

“…Fig. 24(a) shows the present test data of V 0~H for monolithic RC slab with a steel liner, as well as the predicted curves for the ballistic limit V BL by four combinations of existing models in Grisaro and Dancygier [24] approach. It should be noted that the solid parts of lines corresponds to the validated ranges of the models and the dashed parts of the lines are the extrapolations beyond their validated ranges.…”

“…By combined using the existing perforation models for concrete (Li et al [26] and NDRC [30]) and steel (BRL [31] and Rosenberg and Dekel [32]) plates, Grisaro and Dancygier [24] newly proposed an approach for predicting the ballistic limit of the projectile perforating the monolithic RC slab with a steel liner. In which the rear steel liner was firstly equivalent to a certain depth of concrete slab with the same ballistic limit.…”

“…By converting the rear steel liner to an extra certain depth of concrete plate with the same ballistic limit, Grisaro and Dancygier [24] recently proposed an approach to assess the perforation resistance of the RC/steel composite target impacted by non-deforming projectiles.…”

“…An explicit dimensionless expression for predicting the terminal ballistic parameters of the projectile perforating the RC slab was proposed and validated by the present and existing tests data. At last, the validations of Grisaro and Dancygier models [24] for RC/steel composite target were evaluated, respectively.…”